62 diesel

[padresag]

Originally Posted by dieseldude4bt

A 4BT can be done with no mods to the fire wall and can even keep the trans cross member in the stock location.


I used a high mount turbo manifold and had to mod the fire wall recess for exhaust clearance but with a different manifold it could be done with no mods.

so why is this guy having a problem with his crossmember under the b/housing?
http://67-72chevytrucks.com/vboard/s...d.php?t=686847
they are quite a bit smaller than a 453 detroit
ron

[dieseldude4bt]

He is using a ford trans in his.

[mr andrerson]

this guy is running a perkins in a 60
http://inlandempire.craigslist.org/cto/5259631875.html

[BigSix]

Originally Posted by padresag

so why is this guy having a problem with his crossmember under the b/housing?
http://67-72chevytrucks.com/vboard/s...d.php?t=686847
they are quite a bit smaller than a 453 detroit
ron

My bellhousing is a lot bigger than a SM420 and pushed back farther and lower to move weight toward the center. When putting in a non-native drivetrain you really don't want all that weight jackhammering the front. I think you learned that lesson the hard way with that detroit installation! But you live and learn.

The best way to do it is to try to move things for ideal weight distribution. So ideally you would put things into the firewall and down instead of hanging forward - unfortunately that put my giant bellhousing into the shackle crossmember. If the original poster doesn't use a big overdrive transmission and mounts the engine/trans higher up he shouldn't run into my issue.

I recommend the 4BT - it fits well and I believe the weight is approximately the same as or a little less than the stock GMC V6.

The 6BT is a big engine - I have one of those too. I don't know if that would fit in the 60-66 bay.

With all this said - don't expect a quick swap that is straightforward. There is a good amount of fabrication, tinkering, and most of all you will get the bug to go through the engine. I went all the way down to taking out the crank...

Good luck and if you have any 4BT questions we have a few people who have them and may know the answer.

[padresag]

Originally Posted by BigSix

My bellhousing is a lot bigger than a SM420 and pushed back farther and lower to move weight toward the center. When putting in a non-native drivetrain you really don't want all that weight jackhammering the front. I think you learned that lesson the hard way with that detroit installation! But you live and learn.

The best way to do it is to try to move things for ideal weight distribution. So ideally you would put things into the firewall and down instead of hanging forward - unfortunately that put my giant bellhousing into the shackle crossmember. If the original poster doesn't use a big overdrive transmission and mounts the engine/trans higher up he shouldn't run into my issue.

I recommend the 4BT - it fits well and I believe the weight is approximately the same as or a little less than the stock GMC V6.

The 6BT is a big engine - I have one of those too. I don't know if that would fit in the 60-66 bay.

With all this said - don't expect a quick swap that is straightforward. There is a good amount of fabrication, tinkering, and most of all you will get the bug to go through the engine. I went all the way down to taking out the crank...

Good luck and if you have any 4BT questions we have a few people who have them and may know the answer.

i have already told you that was not a sm420 that was in mine .tI told you what it was and it is a little heavier duty and bigger than what you have (a 5 speed o/d). mine also had a 13" clutch which does require a larger bellhousing. the bellhousing mounted in the same area as a stock one would have been, so the trans would have hung in the right place.
I didn't have anything to live and learn about. the detroit was mounted in there where it should have been . it could not have been moved back nor could it have been moved forward, just that it was heavy . it handled and performed well
ron

[BigSix]

Originally Posted by padresag

i have already told you that was not a sm420 that was in mine .tI told you what it was and it is a little heavier duty and bigger than what you have (a 5 speed o/d). mine also had a 13" clutch which does require a larger bellhousing. the bellhousing mounted in the same area as a stock one would have been, so the trans would have hung in the right place.
I didn't have anything to live and learn about. the detroit was mounted in there where it should have been . it could not have been moved back nor could it have been moved forward, just that it was heavy . it handled and performed well
ron

I know. But just above you asked why I had trouble with my bellhousing and I explained my transmission is bigger than the stock SM420 and mounted differently. I seem to have made you sensitive about your old setup - did not mean to. Just wanted to answer your above question because you had posted a link which made me think I didn't clarify originally. Also giving some shoehorning advice to the original poster

[BenkeBird]

Here is the picture tha a take this weekend, maybe it will help you, that was tricky to take the picture in details so I took two of the engine bay and one of the motor mount on the left side.

[TJ's Chevy]

Originally Posted by BenkeBird

Here is the picture tha a take this weekend, maybe it will help you, that was tricky to take the picture in details so I took two of the engine bay and one of the motor mount on the left side.

Man that 6.2 fits in nicely. Might have to consider one for the future. I've heard that a turbo wakes these things up nicely.